A Japanese sushi chain operator has won a Guinness World Records title for the most expensive tuna at auction after paying 510.3 million yen ($3.2 million) at the year's first auction in 2026.The bluefin tuna, weighing 243 kilograms, was caught off Oma in the northeastern prefecture of Aomori. Kiyomura Corp., which operates the sushi chain Sushizanmai, bought it at Tokyo's Toyosu fish market on Jan. 5.The tuna was cut at Sushizanmai's main Tsukiji outlet and served at its restaurants across Japan."We will continue to offer high-quality tuna next year and beyond," Kiyomura President Kiyoshi …READ FULL ARTICLE
